Great Britain’s electricity grid, live: margin notices, frequency, interconnectors and a daily snapshot. Automated. Data: Elexon & NESO.
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NESO turned wind farms down by 81.8 GWh on Thursday 12 November, an average of 3.4 GW across the day. Moray East alone: 19.8 GWh. It's the 9th day over 75 GWh in the past 30 days.
Farms on fixed-price contracts pay to turn down, so on balance the farms paid NESO £160k.
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GB grid at 17:55, Thu 12 Nov:
Demand 43.3 GW, price £212/MWh
Wind 15.1 GW (34%)
Gas 11.1 GW (25%), nuclear 5.1 GW (12%), biomass 3.0 GW (7%)
Net imports 5.3 GW
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GB grid at 17:55, Wed 11 Nov:
Demand 41.6 GW, price £249/MWh
Wind 5.8 GW (14%)
Gas 19.6 GW (46%), nuclear 5.1 GW (12%), other 4.0 GW (9%)
Net imports 2.1 GW
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Balancing Britain's grid cost £19.5m on Monday 9 November. It's the 50th day over £15m since April.
NESO publishes these figures about five days late.
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GB grid at 17:55, Tue 10 Nov:
Demand 42.5 GW, price £248/MWh
Wind 5.4 GW (13%)
Gas 22.5 GW (52%), nuclear 5.1 GW (12%), other 3.7 GW (9%)
Net imports 0.4 GW
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Gas peakers are running hard: open-cycle gas turbines are generating 565 MW at 07:40, the most today.
These quick-start plants come on when the grid is tight.
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GB grid at 17:55, Mon 9 Nov:
Demand 42.2 GW, price £498/MWh
Wind 1.6 GW (4%)
Gas 23.9 GW (56%), nuclear 5.1 GW (12%), other 3.4 GW (8%)
Net imports 2.0 GW
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Gas peakers are running hard: open-cycle gas turbines are generating 509 MW at 08:15, the most today.
These quick-start plants come on when the grid is tight.
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Balancing Britain's grid cost £20.1m on Friday 30 October. Almost all of it was constraints, mostly paying generators to turn down where the network was full. It's the 49th day over £15m since April.
NESO publishes these figures about five days late.
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Update 04:15: margin shortfall now 500 MW (was 1,388 MW) for 08:00–11:00 today, moved from 06:00–11:00.
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Electricity Margin Notice: NESO has issued an EMN for 06:00–11:00 tomorrow (Mon 9 Nov), with a margin shortfall of 1,388 MW, the 7th EMN in the past 12 months.
An EMN asks generators and suppliers for more spare capacity. It doesn't mean power cuts are likely.
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GB grid at 17:55, Sun 8 Nov:
Demand 38.7 GW, price £262/MWh
Wind 1.0 GW (3%)
Gas 22.7 GW (58%), nuclear 5.1 GW (13%), other 3.1 GW (8%)
Net imports 2.0 GW
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GB grid at 17:55, Sat 7 Nov:
Demand 37.2 GW, price £244/MWh
Wind 1.1 GW (3%)
Gas 21.9 GW (59%), nuclear 5.1 GW (14%), biomass 3.0 GW (8%)
Net imports 1.5 GW
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GB grid at 17:55, Fri 6 Nov:
Demand 39.1 GW, price £279/MWh
Wind 1.9 GW (5%)
Gas 21.4 GW (54%), nuclear 5.1 GW (13%), biomass 3.3 GW (8%)
Net imports 1.8 GW
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Gas peakers are running hard: open-cycle gas turbines are generating 624 MW at 15:40, the most today. Today's peak is the highest since Wed 23 Sept.
These quick-start plants come on when the grid is tight.
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GB grid at 17:55, Thu 5 Nov:
Demand 41.6 GW, price £254/MWh
Wind 10.3 GW (24%)
Gas 19.4 GW (44%), nuclear 5.1 GW (12%), biomass 3.3 GW (7%)
Net exports 1.3 GW
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Gas peakers are running hard: open-cycle gas turbines are generating 532 MW at 16:00, the most today. Today's peak is the highest since Tue 6 Oct.
These quick-start plants come on when the grid is tight.
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